Drilldown: Patents
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Patents > Filing date:
1870 - 1879
& National tech categories:
USPC 244/125
& IPCs :
IPC B64B1/00 or
IPC B64C25/00 or
IPC B64C39/00
Use the filters below to narrow your results.
Showing below up to 1 result in range #1 to #1.